Frisch, Oliver

Mennig, Martin

Schlick, Gerd

Schmidt, Helmut K.

Winkler, Ralf-Peter

Scientific documents from the Saarland University,

Proceedings of the 3rd-iccg 
 
589 
Superhard coatings on plastics by nanoparticles 
 
R.-P. Winkler, H. Schmidt, O. Frisch, G. Schlick, M. Mennig 
Institut für Neue Materialien, Saarbrücken, Germany 
 
 
Highly abrasion resistant surfaces on polycarbonate substrates have been prepared by 
coating them with inorganic-organic nanocomposites (NANOMER). The coatings show 2-
4 % haze after 1000 cycles of Taber abrasion test (CS-10F, 500 g load). By overcoating the 
NANOMER layer with a second, very thin layer consisting of polymerizable nanoparticles, 
extremely high abrasion resistant coatings with less then 2 % haze after 1000 cycles of 
Taber abrasion test and an excellent adhesion (cross cut and tape test 0/0) were achieved 
simply by wet coating techniques. 
After dip coating and drying the NANOMER coating (thickness 5-7 µm) at ambient 
temperature, the second coating with the polymerizable nanoparticles was applied „wet on 
wet„ by dip coating as well and then cured at 130 °C for two hours. The resulting thickness 
of the topcoat could be varied from 150 to 600 nm. The topcoated substrates showed 
excellent weather stability (no damage after a testing period of 700 h in the QUV test) and 
high chemical resistance. 
This technique offers the possibility of large area coatings by wet coating techniques (e. g. 
flow coating, dip coating) for architectural or automotive glazing. 


Superhard coatings on plastics by nanoparticles

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Proceedings of the 3rd-iccg  589 Superhard coatings on plastics by nanoparticles  R.-P. Winkler, H. Schmidt, O. Frisch, G. Schlick, M. Mennig Institut für Neue Materialien, Saarbrücken, Germany   Highly abrasion resistant surfaces on polycarbonate substrates have been prepared by coating them with inorganic-organic nanocomposites (NANOMER). The coatings show 2-4 % haze after 1000 cycles of Taber abrasion test (CS-10F, 500 g load). By overcoating the NANOMER layer with a second, very thin layer consisting of polymerizable nanoparticles, extremely high abrasion resistant coatings with less then 2 % haze after 1000 cycles of Taber abrasion test and an excellent adhesion (cross cut and tape test 0/0) were achieved simply by wet coating techniques. After dip coating and drying the NANOMER coating (thickness 5-7 µm) at ambient temperature, the second coating with the polymerizable nanoparticles was applied „wet on wet„ by dip coating as well and then cured at 130 °C for two hours. The resulting thickness of the topcoat could be varied from 150 to 600 nm. The topcoated substrates showed excellent weather stability (no damage after a testing period of 700 h in the QUV test) and high chemical resistance. This technique offers the possibility of large area coatings by wet coating techniques (e. g. flow coating, dip coating) for architectural or automotive glazing. 

http://scidok.sulb.uni-saarland.de/volltexte/2010/2988/pdf/sm200007.pdf

Superhard coatings on plastics by nanoparticles

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Scientific documents from the Saarland University,

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